Abstract: An apparatus for encoding and decoding video receives a request to decode a current video frame. The apparatus determines whether encoding is within a threshold for a previous video frame. Additionally, the apparatus waits for the encoding to start if the encoding is within the threshold. Further, the apparatus provides a signal to begin encoding the current video frame. Also, the apparatus submits a decode workload to a graphics processor unit (GPU) for the current video frame. The apparatus additionally submits, in parallel with submitting the decode workload to the GPU, an encode workload to the GPU for the previous video frame.

Abstract: The invention is particularly related with an encryption method that aims to secure an input data with reduced number of encryption operations. The invention claim the security by using the hardness of the unique decodability of the variable-length non-prefix-free (NPF) codes. The proposed encryption system is operated according to these steps, compression of the input data and coding with the introduced NPF encoding that splits the independent and identically distributed (IID) data to the two stream as code-word boundaries information data, which has all information of boundaries of NPF code words stream, and NPF code words stream which has all payload of encoded IID data except code-word boundaries information and then encrypting the code-word boundaries information without NPF code words stream.

Abstract: Provided is a video processing device and method capable of managing a security level of content included in a video. The video processing method includes: receiving an identifier of a video and information about a security policy to be set to the video; receiving security information related to the security policy; preparing the video by using the received identifier of the video; and updating security information of the prepared video by using the received security information according to the security policy.

Abstract: Several systems and methods for processing of video frames based on one or more video formats are disclosed. In an embodiment, a video processing system comprises a memory and a video engine. The memory stores a plurality of video frames, a primary set of instructions and a plurality of secondary sets of processing instructions. Each secondary set of processing instructions is associated with a video format. The video engine is loaded with the primary set of instructions and is configured to fetch one or more video frames and a secondary set of processing instructions from the memory based on the loaded primary set of instructions. The fetched secondary set of processing instructions corresponds to a video format determined for processing of the one or more video frames. The video engine performs processing of the one or more video frames based on the secondary set of processing instructions.

Abstract: During video coding, frame rate conversion (FRC) capabilities of a decoder may be estimated. Based on the estimated FRC capabilities, an encoder may select a frame rate for a video coding session and may alter a frame rate of source video to match the selected frame rate. Thereafter, the resultant video may be coded and output to a channel. By incorporating knowledge of a decoder's FRC capabilities as source video is being coded, an encoder may reduce the frame rate of source video opportunistically. Bandwidth that is conserved by avoiding coding of video data in excess of the selected frame rate may be directed to coding of the remaining video at a higher bitrate, which can lead to increased quality of the coding session as a whole.

Abstract: Provided herein are systems, methods, and software for facilitating information exchange services. In at least one implementation, an information exchange service processes communications indicative of a plurality of actions taken with respect to a plurality of derivative versions of a service item associated with a source version of the service item to determine which action of the plurality of actions controls. The information exchange service identifies a modification to apply to data associated with the source version of the service item to reflect the action determined to control and initiates communications indicative of the modification with which to update data associated with each of the plurality of derivative versions of the service item.

Abstract: Methods, devices and systems that perform VC-2 decoding are disclosed. In an embodiment, a VC-2 decoder includes three parallel data paths including top-band, current-band and bottom-band data paths. The top-band data path performs variable length decoding (VLD), inverse-quantization (IQ) and inverse-DC-prediction (IDCP) processing of a top compressed data-band. The current-band data path performs VLD, IQ and IDCP processing of a current compressed data-band. The bottom-band data path performs VLD, IQ and IDCP processing of a bottom compressed data-band. Additionally, the decoder includes a three-level inverse discrete wavelet transform (IDWT) module to perform IDWT processing to synthesize decoded source pixel values in dependence on partially-decompressed top, current and bottom data-bands produced using the three parallel data paths.

Abstract: Image data from a CMOS sensor with 10 bit resolution is reformatted in real time to allow the data to stream through communications equipment that is designed to transport data with 8 bit resolution. The incoming image data has 10 bit resolution. The communication equipment can transport image data with 8 bit resolution. Image data with 10 bit resolution is transmitted in real-time, without a frame delay, through the communication equipment by reformatting the image data.

Abstract: The invention provides a solution for secure and non-manipulatable processing of a data stream in a receiver, possibly in conjunction with a smartcard. A packet identity and a content type identifier associated with the packet identifier are received in encrypted form and securely processed within the receiver to allow an encrypted payload of the data stream to be processed without the possibility to manipulate the content type identifier in an attempt to intercept the payload after decryption.

Abstract: A digital broadcast transmitter/receiver, and a signal processing method thereof, includes a randomizer randomizing a dual transport stream which includes a normal data packet and a robust data packet and into which stuff bytes are inserted, a stuff-byte exchanger replacing the stuff bytes of the randomized data with known data, a first RS encoder performing RS-encoding of data output from the stuff-byte exchanger, a packet formatter performing an interleaving of the robust packet of the data output from the first RS encoder and reformatting the packet, an interleaver interleaving data output from the packet formatter, a trellis encoder performing a trellis encoding of interleaved data, a second RS encoder changing a parity by performing an RS encoding of the robust data of the trellis-encoded data, and a modulator modulating data output from the trellis encoder and RF up-converting the modulated data.

Abstract: Provided is a delivery system that responds to requests from various terminals and delivers content converted to be viewable/audible by the terminals. The delivery system includes a gateway that requests, if a temporary content accumulation apparatus does not store a moving image stream or moving image file receivable by a content-requesting-terminal, the external delivery server to transmit moving image content specified in a request message, generates a moving image stream or moving image file satisfying reception capability of the content-requesting-terminal, transmits the generated moving image stream or moving image file to the terminal, and stores the generated moving image stream or moving image file in the temporary content accumulation apparatus.

Abstract: An interface is realized that can prevent video signals from being copied easily and which uses a luminance/color difference signal transmission scheme with an excellent harmony with a television circuit. In a video transmission using a digital interface, colorimetry information for defining the conversion from the luminance/color difference signal into a primary color signal and video aspect ratio information are transmitted along with the luminance/color difference type video signal. This allows reproduction of video with high quality and high resolution and also realizes a copyright protection which allows only the users authorized by key information to use the content of the video. With this transmission scheme, it is possible to provide a transmitting apparatus, a receiving apparatus and an interface which highly harmonize with a rationalized television-based circuit.

Abstract: A video encoding apparatus provides with a generator to generate a decoded image corresponding to an image obtained by decoding an encoded image obtained by encoding an original image by a first prediction scheme, a selector to select one of the original image and the decoded image as an input image according to a flicker of an image, and an encoder to encode the input image by a second prediction scheme to generate encoded data.

Abstract: A digital broadcasting reception apparatus and robust stream decoding method thereof. The digital broadcasting reception apparatus includes a robust decoder that decodes a robust stream of a dual transport stream where a normal stream and the robust stream are combined. The robust decoder includes a first decoder that trellis-decodes the robust stream; a robust deinterleaver that interleaves the trellis-decoded robust stream; a second decoder that convolution decodes the deinterleaved robust stream; a robust interleaver that interleaves the convolution-decoded robust stream; and a frame formatter that adds decoded data of the second decoder to a part that corresponds to a position of the robust stream of a frame where the normal stream and the robust stream are mixed. Accordingly, a receiver of a simple structure can be provided.

Abstract: A method for receiving a broadcasting signal and a broadcasting signal receiver are disclosed. Even when a cell is changed while an emergency alert is output, the emergency alert can be continuously output using emergency alert table information included in the broadcasting signal and channel information of the cell. The emergency alert table information may include a cell identifier and the channel information of the cell may include virtual channel information of the cell.

Abstract: A method for receiving a broadcasting signal and a broadcasting signal receiver are disclosed. Even when a cell is changed while an emergency alert is output, the emergency alert can be continuously output using emergency alert table information included in the broadcasting signal and channel information of the cell. The emergency alert table information may include a cell identifier and the channel information of the cell may include virtual channel information of the cell.

Abstract: A digital broadcast transmitter/receiver, and a signal processing method thereof, includes a randomizer randomizing a dual transport stream which includes a normal data packet and a robust data packet and into which stuff bytes are inserted, a stuff-byte exchanger replacing the stuff bytes of the randomized data with known data, a first RS encoder performing RS-encoding of data output from the stuff-byte exchanger, a packet formatter performing an interleaving of the robust packet of the data output from the first RS encoder and reformatting the packet, an interleaver interleaving data output from the packet formatter, a trellis encoder performing a trellis encoding of interleaved data, a second RS encoder changing a parity by performing an RS encoding of the robust data of the trellis-encoded data, and a modulator modulating data output from the trellis encoder and RF up-converting the modulated data.

Abstract: A digital broadcasting transmission apparatus and robust stream coding method thereof. The digital broadcasting transmission apparatus includes a robust processor that codes a robust stream of a dual transport stream where a normal stream and the robust stream are combined. The robust processor includes a demultiplexer (DE-MUX) that separates the normal stream and the robust stream from the dual transport stream; a robust encoder that appends a parity to the separated robust stream; a robust interleaver that interleaves the robust stream having the appended parity; and a MUX that combines the interleaved robust stream and the separated normal stream. Accordingly, a receiver of a simple structure can be provided.

Abstract: A digital broadcast transmitter/receiver, and a signal processing method thereof, includes a randomizer randomizing a dual transport stream which includes a normal data packet and a robust data packet and into which stuff bytes are inserted, a stuff-byte exchanger replacing the stuff bytes of the randomized data with known data, a first RS encoder performing RS-encoding of data output from the stuff-byte exchanger, a packet formatter performing an interleaving of the robust packet of the data output from the first RS encoder and reformatting the packet, an interleaver interleaving data output from the packet formatter, a trellis encoder performing a trellis encoding of interleaved data, a second RS encoder changing a parity by performing an RS encoding of the robust data of the trellis-encoded data, and a modulator modulating data output from the trellis encoder and RF up-converting the modulated data.

Abstract: Embodiments of an apparatus and a method for storing data in a digital broadcasting receiver can convert received digital TV broadcasting data into data of another format before being stored. In one embodiment, redundancy data of the digital TV broadcasting data can be generated based on the converted data of the predetermined format and stored with the converted data of the predetermined format to variably output two formats of data with the single stored data.

Abstract: A digital broadcast transmitter/receiver, and a signal processing method thereof, includes a randomizer randomizing a dual transport stream which includes a normal data packet and a robust data packet and into which stuff bytes are inserted, a stuff-byte exchanger replacing the stuff bytes of the randomized data with known data, a first RS encoder performing RS-encoding of data output from the stuff-byte exchanger, a packet formatter performing an interleaving of the robust packet of the data output from the first RS encoder and reformatting the packet, an interleaver interleaving data output from the packet formatter, a trellis encoder performing a trellis encoding of interleaved data, a second RS encoder changing a parity by performing an RS encoding of the robust data of the trellis-encoded data, and a modulator modulating data output from the trellis encoder and RF up-converting the modulated data.

Abstract: A digital broadcasting transmission and reception system includes a digital broadcasting transmission apparatus and a digital broadcasting reception apparatus. The digital broadcasting transmission apparatus that includes a robust processor that codes a robust stream of a dual transport stream where a normal stream and the robust stream are combined. The robust processor includes a demultiplexer (DE-MUX) that separates the normal stream and the robust stream from the dual transport stream; a robust encoder that appends a parity to the separated robust stream; a robust interleaver that interleaves the robust stream having the appended parity; and a MUX that combines the interleaved robust stream and the separated normal stream. The digital broadcasting reception apparatus includes a robust decoder that decodes a robust stream of a dual transport stream where a normal stream and the robust stream are combined.

Abstract: A method for decoding variable length encoded digital video data including pictures, to a size less than the full size of the pictures, each picture including a plurality of macroblocks. The method comprises the steps of receiving digital video data; parsing the digital video data to identify macroblocks included in the digital video data; discarding from the digital video data those macroblocks not associated with a picture region substantially corresponding to one of a safe-title picture region and safe-action picture region; and storing the digital video data in a decoder input buffer.

Abstract: A method of processing coded video, for example by inserting generated frames, or adjusting values in timing fields, or adjusting the time at which it is output, to adjust the timing of output of decoded video from a decoder receiving the coded video is disclosed, together with corresponding apparatus. The outputting apparatus may be included in a multiple-source video system, to enable multiple video sources to be synchronized. The output video can be synchronized to a studio reference clock.

Abstract: A simple and efficient scheme is used to predict the number of bits needed to block of discrete cosine transform (DCT) coefficients with variable length coding (VLC). The scheme defines an easily computable parameter that has a strong correlation with the number of bits needed to encode the DCT data. Then a second order polynomial is developed to approximate the correlation and is used to predict the number of VLC bits that will be produced if a corresponding quantization matrix is used. The approach can be used to streamline the encoding/transcoding process for DV, and the result on that is presented. A further feature is the ability to present multiple results for multiple quantization matrixes.

Abstract: A method and apparatus for enhancing the performance in displaying a large bitmap image transferred from a producer device to a consumer device. When using EIA775A to transfer large bitmap images from a producer device to a consumer device performance can suffer. This is especially the case for very large images such as program guides and graphical user interfaces. Performance can be enhanced by determining if the bitmap image is larger than a predetermined threshold. If so, an audio/video control message can be sent from the producer device to the consumer device to switch from a digital connection to an analog connection. The large bitmap image can then be transferred as an analog signal rather than digital to enhance performance.

Abstract: A device for transmitting video data is provided which includes a temporary memory, a standby memory, a bit counter, and a controller. The temporary memory stores N original blocks of data which are variable length coded such that a plurality of the blocks have different bit rate lengths. The standby memory sequentially stores N processed blocks such that the N processed blocks each have a bit rate length that is equal to or less than a specified bit rate length and subsequently outputs the N processed blocks to be transmitted at a fixed bit rate. The bit counter generates address signals for storing the N original blocks in the temporary memory and generates an address signal for storing the N processed blocks in the standby memory.

Abstract: A video display apparatus includes a display device, resolution conversion unit, and display position setting unit. The resolution conversion unit converts the resolution of an input video signal into that of the display device. The display position setting unit sets the display position of a first video signal in each field to be displayed on the display device on the basis of the temporal relationship between a time from generation of a vertical sync signal to input of the first video signal and the generation timing of a horizontal sync signal.

Abstract: A digital television (DTV) data format converter of a system automatically detects whether a serial data stream includes parity data and converts the serial DTV data stream to a parallel DTV data stream. The DTV data format converter transmits the parallel DTV data stream converted from the serial DTV data stream in accordance with a first conversion protocol if the serial DTV data stream includes parity data. If the serial DTV data stream does not include parity data, the converter transmits the parallel DTV data stream converted from the serial DTV data stream in accordance with a second conversion protocol. In this way, the converter accommodates a serial DTV data stream with or without parity data. The DTV data format converter may be implemented in the form of a peripheral component interconnect (PCI) card, permitting compatibility with computer systems and other PCI-based systems. The DTV data format converter may include a receiver block, a transmitter block, and a buffer.